Apr 06, 2017· Lanthanum hexaboride (LaB 6) is a well known thermionic material (see for instance refs 1,2,3,4,5 among the many available). Its ability to emit electrons has been widely exploited in last 60 .
Plasmon-band subpeak and oxidation of solar-control LaB6 nanoparticles - Volume 31 Issue 18 - Keisuke Machida, Mika Okada, Satoshi Yoshio, Kenji Adachi
09-27-2017 Nano-Absorbers for Laser Welding Textile and Polymer Materials Perfectly Joined. Laser welding, as a technology of the future for joining new, sophisticated composite materials, is expected to push the boundaries of application shortly, thanks to recent textile research.
Mar 13, 2019· (2018) Life Evaluation of a Lanthanum Hexaboride Hollow Cathode for High-Power Hall Thruster. Journal of Propulsion and Power 34:4, 893-900
Tungsten deposited with lanthanum hexaboride (LaB 6) is of interest, as LaB 6 is characterized by the properties of an excellent electron emitter. The authors report a field emission study of the LaB 6 /tungsten system prepared by depositing LaB 6 in situ on to a tungsten tip. The observed maximum decrease in the average work-function was from 4.52 eV (clean tungsten) to 1.75 eV (LaB 6 .
Lanthanum hexaboride (also called lanthanum boride and LaB6) is an inorganic chemical, a boride of lanthanum. Properties of Lanthanum hexaboride: -High melting point of 2528 K -Insoluble in water and hydrochloric acid -High electron emissivity -Stable in vacuum Product Lanthanum Hexaboride Structure Polycrystalline Symbol LaB6 Thermal Conductive 47 W/mK (20℃) Cas No. 12008-21-8 Thermal .
Packaging / Properties of Lanthanum Hexaboride Although LaB 6 is not that rare and has a relatively mature production process, the small rods of LaB 6 are still quite brittle. We require the individual rods to be packaged in plastic bags with vacuum seal, and heavy foam. Documents packed together are COA of the raw material (Lanthanum Boride .
Nano-Scaled Lanthanum Hexaboride (LaB6) – Control of Properties in Dependence on Type of Manufacturing. Materials Today: Proceedings 2019, 7, 835-843. DOI: 10.1016/j.matpr.2018.12.082. Tracy Mattox, Jeffrey Urban. Tuning the Surface Plasmon Resonance of Lanthanum Hexaboride to Absorb Solar Heat: A Review.
This paper describes an experimental investigation of the thermionic emission properties of a rhenium tape coated with lanthanum hexaboride, and considers its usefulness as a low temperature emitter for demountable vacuum ionization gauges and mass spectrometers.
Lanthanum hexaboride nanowires produced by chemical vapor deposition are single-crystalline and grown along the  direction. Streaks appearing in the electron diffraction spots indicate the lateral direction perpendicular to the nanowire growth axis.
LaB6 nanowires are ideal for applications as an electrical field-induced ion and electron point source due to their miniature dimensions, low work function, as well as excellent electrical, thermal, and mechanical properties. We present here a reliable method to fabricate and assemble single LaB6 nanowire-based field emitters of different crystal orientations.
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"Independent tuning of work function and field enhancement factor in hybrid lanthanum hexaboride-graphene-silicon field emitters", Journal of Vacuum Science & Technology B, 35, 062202, 2017. 45. B.
Lanthanum hexaboride (LaB6) nanocrystals, with an ∼1000 nm wavelength localized surface plasmon resonance ideal for interacting with solar near-infrared radiation, have been synthesized for the first time in a relatively low temperature flask reaction using sodium borohydride as both boron source and "solvent". Furthermore, the incorporation of isophthalic acid as a ligand allows the .
Nano lanthanum hexaboride has diverse uses in traditional & high-tech industries like mechanics, electronics, aeronautics, metallurgy, chemistry, environment, etc.
Single‐crystalline lanthanum hexaboride (LaB 6) nanowires show excellent electric‐field‐induced electron emission following the Fowler–Nordheim scheme. The LaB 6 nanowires grow in the <001> crystallographic direction (see Figure) with diameters of about 20 nm. An emission current of 30 nA from a single nanowire, corresponding to a emission current density of 5 × 10 5 A cm –2, has .
Nano photoelectron ioniser chip using LaB6 for ambient pressure trace gas detection. Article . Thin lanthanum hexaboride (LaB"6) films deposited by pulsed laser technique (PLD) serve as the air .
Experimental Characterization of a Lanthanum Hexaboride Hollow Cathode for Five-Kilowatt-Class Hall Thrusters. Daniela Pedrini * University of Pisa, 56126 Pisa, . (2018) Effect of relative position between cathode and magnetic separatrix on the discharge characteristic of Hall thrusters. . (2017) Examination of a 5 A-class cathode with a .
Author(s): Mattox, Tracy M; Urban, Jeffrey J | Abstract: While traditional noble metal (Ag, Au, and Cu) nanoparticles are well known for their plasmonic properties, they typically only absorb in the ultraviolet and visible regions. The study of metal hexaborides, lanthanum hexaboride (LaB₆) in particular, expands the available absorbance range of these metals well into the near-infrared.
Lanthanum Hexaboride Hollow Cathode Performance and Wear Testing for the Asteroid Redirect Mission Hall Thruster. . Reviews of Modern Plasma Physics, Vol. 3, No. 1 . 22 December 2017 | Journal of Propulsion and Power, Vol. 34, No. 4.
Received February 24, 2017; Revised March 29, 2017 Citation : J. Cheng, G. Chen, and Y. Zhu, Nano Adv., 2017, 2, 29−35. In this study, we have developed biodegradable Fe 3 O 4 /polycaprolactone (Fe 3 O 4 /PCL) microneedle s with controlled drug delivery and magnetic hyperthermia, which consist of biodegradable PCL and the encapsulated Fe 3 O 4 nanoparticles, drugs and low-melting-point …
The paper presents the results of a study of the lanthanum hexaboride nanosized powder modification effect on the cast structure of martensitic and austenitic steels deoxidized with aluminum and silicon. The study was conducted on high-chromium steels of austenitic and martensitic classes, and nanosized lanthanum hexaboride powder was used as a modifier.
Lanthanum hexaboride (LaB6) is known for its hardness, mechanical strength, thermionic emission, and strong plasmonic properties. However, given the lack of colloidal synthetic methods to access this material, very little is understood about its physical properties on the nanoscale. Recently, a new moderate-temperature synthetic technique was developed to directly synthesize LaB6 nanoparticles .
Nano-Scaled Lanthanum Hexaboride (LaB 6) – Control of Properties in Dependence on Type of Manufacturing Author links open overlay panel Volkan Yavuz a Rodrigue Ngoumeni b Karin Peter a Jonas Rose a Peter Sindlhauser b Martin Möller a c